Thermostat device



FIG. 1 is a perspective view of a thermostat device;

FIG. 2 is a top plan view of the thermostat device of FIG. 1;

FIG. 3 is a bottom plan view of the thermostat device of FIG. 1;

FIG. 4a is a front side elevation view of the thermostat device of FIG. 1;

FIG. 4b is a rear side elevation view of the thermostat device of FIG. 1;

FIG. 5a is a left side elevation view of the thermostat device of FIG. 1; and,

FIG. 5b is right side elevation view of the thermostat device of FIG. 1.

The broken line is included for illustrative purposes only and forms no part of the claimed design. 

CLAIM We claim the ornamental design for a thermostat device, as shown and described in the Figures. 